Title: Miniaturised CSCP patch antenna using PMGS and IFS with frequency rejection at 5.5 GHz for UWB wireless applications

Authors: Kailas Kantilal Sawant; C.R. Suthikshn Kumar

Addresses: Millimeter Wave and Antenna Lab, Defence Institute of Advanced Technology (DU), DRDO, Pune, India ' Millimeter Wave and Antenna Lab, Defence Institute of Advanced Technology (DU), DRDO, Pune, India

Abstract: This paper focuses on the performance parameters estimation of a patch antenna in their ultra wideband region. In particular, a special attention intended for FRNB characterisation for WLAN at 5.15-5.825 GHz, bandwidth enhancement, and size reduction. The fractal and PMGS techniques help to keep VSWR < 2. A CSCP antenna excited by a 50 ohm CPW-feed embedded with an N-shaped FRNB is examined and experimentally tested. With this design, the attainable impedance bandwidth is about 138% (S11 < −10 dB) in the UWB range. This antenna is fabricated on FR4 substrate having dielectric constant ε_r = 4.3, thickness t = 1.53 mm, loss tangent tan δ = 0.0162, and effective conductivity at f₀(S/m) = 0.0042. The simulated and experimental results are found valid. This antenna is very useful in UWB wireless communications in their band pass and band stop characterisation.

Keywords: concentric square circular patch; CSCP antennas; fractal patch antennas; frequency rejection notch band; FRNB; partially modified ground structure; PMGS; ultra wideband; IFS; iterated function system; WLAN; wireless LANs; local area networks; bandwidth enhancement; size reduction; band pass; band stop.

DOI: 10.1504/IJUWBCS.2016.080163

International Journal of Ultra Wideband Communications and Systems, 2016 Vol.3 No.3, pp.115 - 125

Received: 13 Aug 2015
Accepted: 27 Mar 2016
Published online: 06 Nov 2016 *

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